Re: [Bluez-devel] Re: [Bluez-users] PANU service search

[Marcel Holtmann <marcel@holtmann.org>]

Hi Claudio,

> I will try explain my problem more deeply.
> 
> Bluetooth Extended Service Discovery Profile (ESDP) for Universal Plug
> and Play(UPnP)
> defines how devices with Bluetooth wireless communications can use the
> Bluetooth
> Service Discovery Protocol (SDP) initially to discover other devices
> that support UPnP
> services and retrieve information about these services.
> For more details see http://www.bluetooth.org  document: ESDP_for_UPnP_V0.95.pdf
> 
> According with this profile three approach can be implemented:
> 1. L2CAP -based Solution: focus on layering UPnP services 
>    over the L2CAP layer of the Bluetooth protocol stack for use by 
>    devices that lack IP support.
> 2. IP-based Solution using PAN Profile: focus on layering UPnP
> services over the Bluetooth Personal Area Networking (PAN) Profile.
> 3. IP-based Solution using LAN Access Profile : focus on layering UPnP
> services over the Bluetooth Local Area Network (LAN) Access Profile.
> 
> I choose the SECOND because I have to address ad hoc and NAP scenarios. The 3th
> option doesn't support multiple connections. The first option is not
> feasible for me
> because a UPnP service can be available in a server that belong to a
> LAN. Therefore,
> using  L2CAP -based Solution I will not be able to search UPnP service
> in a device
> that doesn't belongs directly to the PAN.
> 
> 
> After select the SECOND approach two scenarios exist:
> - Ad Hoc scenario
>   The Control Point* device(role GN) will establish a PAN with PANUs
> devices(listen enabled), assign IP to the nodes and after search for
> UPnP services. The Control Point is the active member, it search for other
> devices and must foward packet to all devices that belongs to the PAN.
> 
> - NAP scenario
>   If a NAP(listen enabled) is available, the Control Point(role PANU)
> will connect to
> the NAP and search for UPnP service in the LAN

and I still don't see your problem here. Everything is available for
doing this.

> I implemented the search for PANU service and tested. Now, what is the
> procedure to
> submit a new patch. I am not sure if this small enhancement can be
> usefull for the
> bluez community.

Create a patch and post it to the bluez-devel mailing list.

Regards

Marcel




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